Thanks for this clue as it seems to solve alot of problems for me. I have to test it to see how it work but I don't known if this will work if the preview tab have not been clicked as I remember that the preview button is what will make the text automatically saved as draft.
That's good if you always hit that "Preview" button but for someone like me who keep forgetting doing it, it really can't help 😅. But yeah, hitting the back button works for me, i use a mouse like this image below with that back button.